package com.guijq.selfcode.javase;

/**
 * @author yangjf
 * @time 2019-06-18 10:58
 */
public class CatTest {
    public static void main(String[] args) {
        Cat cat = new Cat();
        WhiteCat whiteCat = (WhiteCat) cat;
        cat.showCatColor();
    }
}
